They launched Uno $8 when MyRepublic first rolled out their Mobile plans somewhere in May 2018. The plan ultimately ended on 31 July 2018 (based on the email record that I have).
i see. so looks like the Lite $10 plan may be extended again. Close to the last few days of 30 June 2020 we will know this.
For light usage, advisable to go for MR Lite or Giga or TPG?
Seeing that the plans are all $10..
TPG is totally not recommended as their network coverage for underground MRT is almost zero and only selected underground MRT stations according to the feedback of some users but they are very very rare still as of now.
Giga is not on full service like other MVNOs, similar to Gomo. Both do not come with outgoing call support while roaming. This can be an issue if one needs to make urgent outgoing voice calls while roaming.
it has only 1GB lesser data than MR Lite and 200 smses and 200 mins talktime lesser than MR Lite.
No unlimited data after the bundle data at 384kbps speed like MR Lite.
Unless for reason that M1 network is not good at your area or the places that you are mostly frequent in, else MR lite is a no brainer the best overall $10 plan as compared to other competitors. Importantly the rest of plans you consider, there are no promo end date which you can switch to them anytime if you are not good with MR lite. Once promo is over, you will not get it anymore similar to the previous UNO $8 they had.
Alternatively you can consider CMlink at an average $12.86/mo for 7 months (promo ends 30 June 2020 - same end date as MR Lite). Then look for other better plan after the 7th month with them as it is not lacking of good promo plans for sim only nowadays.